[FFmpeg-devel] [PATCH] avcodec/put_bits: fix off be one

Ronald S. Bultje rsbultje at gmail.com
Sun Jan 24 18:10:54 CET 2016


Hi,

On Sun, Jan 24, 2016 at 12:02 PM, Paul B Mahol <onemda at gmail.com> wrote:

> On 1/24/16, Paul B Mahol <onemda at gmail.com> wrote:
> > On 1/24/16, Ronald S. Bultje <rsbultje at gmail.com> wrote:
> >> Hi,
> >>
> >> On Sun, Jan 24, 2016 at 11:41 AM, Paul B Mahol <onemda at gmail.com>
> wrote:
> >>
> >>> patch attached.
> >>
> >>
> >> I think that's wrong. buf_end is buf_start+size, so if size=1, this
> >> allows
> >> writing up to and including buf_start[1], which overflows size=1.
> >
> > Assert happens otherwise when encoding flac.
> >
>
> ffmpeg -i http://granjow.net/uploads/kdenlive/samples/red-leaf-tips.avi
> o.flac


Is there a trac issue to track this? Do you have a backtrace?

Ronald


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